I really thought it wouldn't be so hard!! Clementoni Impossible Puzzle 101 Dalmatians - 1000 pieces : r/Jigsawpuzzles
Clementoni 39526 Impossible 1000pc Puzzle Frozen 2 for sale online | eBay
Amazon.com: Clementoni - 39575 - Impossible Puzzle - Batman - 1000 Pieces - Made in Italy, Jigsaw Puzzle for Adult and Children, Ages 10 Years Plus : Toys & Games
Marvel 1000 pieces impossible puzzle by Clementoni (wouldn't say impossible but i got a bit frustrated halfway through, fun though :)) : r/Jigsawpuzzles
Amazon.com: Clementoni 39645 1000pcs Impossible Hello Kitty 1000 Pieces, Made in Italy, Jigsaw Puzzle for Adults, Multicolor, Medium : Toys & Games
Clementoni Impossible Puzzle : Disney Frozen II 1000 Piece Puzzle – The Puzzle Collections